PriUPS Bonus: Multiple Supply Examples

I am putting together some "systems" in addition to the primary PriUPS system
which resides at home. In addition to demonstrating feasibility, they will
let my Prius have more adventures since it will be renowned as a power plant on
wheels. All of these systems are completely portable and can provide
power while the Prius is in motion as well as when stationary. Here are
the specs:

As you can see, carrying around the 800W supply has a negligible weight penalty.
Even the largest 2.7kW system only weighs about the same as a small passenger.
There are additional opportunities for weight savings. Although I show the
weight of the system with and without the batteries that are part of the UPS
itself, removing them is optional. Running the UPS from
an external source of voltage equivalent to their internal batteries works fine
for the APC, R1500 and R3000, but I'm not sure that's universally true.
Batteries can provide much greater peak currents than the swtichers can. Adding a largish capacitor
(a pound or so) to replace the battery packs in each UPS might salve my
conscience, but would also reduce the versatility of the UPS since it could only
be used with the Prius running. On batteries it can supply power briefly
without bothering to turn the car on. Another consideration: if the
switcher is only to run the UPS rather than also charge the batteries, it can
run at the battery nominal voltage, e.g. 48V, instead of the correct charging
voltage, e.g., 56V. This is convenient if, for example, your supply is
fixed at 48V.

I'm working on four systems, as detailed in the table above. The small, medium and large "A" system
are complete as of this writing, 08 April 2006
(and update, 26 April 2006). I've been
keeping one or another running in the trunk as I drive around and using it to power loads in
the car. The large system "B" is under construction - I'll add
to the linked information (top line of the table) as they progress.